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$N$ Is a Number: A Portrait of Paul Erdős. (Official site; Wikipedia linkWikipedia link)
$N$ Is a Number: A Portrait of Paul Erdős. (Official site; Wikipedia link)
$N$ Is a Number: A Portrait of Paul Erdős. (Official site; Wikipedia link) Cover http://cs.smith.edu/%7Eorourke/MathOverflow/nistitle.jpg